\documentclass[11pt]{article}

\usepackage[margin=1in,letterpaper]{geometry}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{fancyvrb}

\begin{document}

\VerbatimInput[frame=single,fontsize=\footnotesize]{falconn_global.h}

\VerbatimInput[frame=single,fontsize=\footnotesize]{sketches.h}

\VerbatimInput[frame=single,fontsize=\footnotesize]{lsh_nn_table.h}

\end{document}
